やばい

• Reading: やばい
• Romaji: yabai
• Pronunciation: /ja.ba.i/

Meaning

An extremely versatile exclamation meaning awesome, terrible, dangerous, or intense — context determines whether it is positive or negative.

Originally underworld jargon meaning 'dangerous,' やばい underwent a dramatic meaning shift starting in the 1990s. Young speakers began using it positively to mean 'amazing' or 'incredible.' Today it functions as an all-purpose intensifier for both good and bad situations, making it one of the most frequently heard words in casual Japanese.

Examples

1. この映画やばくない？めっちゃ感動した。 Isn't this movie insane? I was so moved.
2. やばい、電車に遅れる！走らないと。 Oh crap, I'm gonna miss the train! I gotta run.
3. このラーメンやばいくらい美味しいから絶対食べて。 This ramen is ridiculously good, you absolutely have to try it.

Usage Guide

Context: friends, social media, casual conversation

Tone: exclamatory, versatile

Do Say

• このケーキやばい！超美味しい！ (This cake is incredible! So delicious!)
• テスト前日なのに全然勉強してない、やばい。 (The exam is tomorrow and I haven't studied at all, oh no.)

Don't Say

• ビジネスミーティングで「やばいですね」は避ける (Avoid 'yabai desu ne' in business meetings — too casual even with polite form)

Common Mistakes

• Using やばい in formal situations like job interviews or with superiors
• Not understanding the dual positive/negative meaning from context — tone and facial expression are key

Origin & History

Derived from やば (dangerous), possibly from 矢場 (archery range / illegal gambling house). Originally underworld slang, it entered mainstream youth language in the 1990s-2000s and is now universal.

Cultural Context

Era: 1990s mainstream adoption, originally older underworld slang

Generation: All ages (universal since 2000s)

Social background: Universal informal

Regional notes: Used across all of Japan. One of the most common informal words in the language.